Keys, the No. 19 seed and a two-time semifinalist at Melbourne Park, had won the first set. But Rybakina, who like Keys is a precise winner machine when she is playing the tennis she wants to play, had taken the second by seizing the initiative and playing on her front foot. Halfway to the finish, Keys had become a passive counterpuncher.

Iga Swiatek’s latest lopsided win at the Australian Open has come in the quarterfinals against Emma Navarro MELBOURNE, Australia — Iga Swiatek is dominating her Australian Open opponents the way no one has at Melbourne Park since Maria Sharapova in 2013.

Iga Swiatek continued her run through the Australian Open on Wednesday, cruising past Emma Navarro to reach the semifinals, where she will meet Madison Keys.